Invention Grant
- Patent Title: Polyimide precursor solution and polyimide shaped article
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Application No.: US15916335Application Date: 2018-03-09
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Publication No.: US11339289B2Publication Date: 2022-05-24
- Inventor: Kenji Kajiwara , Wataru Yamada
- Applicant: FUJIFILM Business Innovation Corp.
- Applicant Address: JP Tokyo
- Assignee: FUJIFILM Business Innovation Corp.
- Current Assignee: FUJIFILM Business Innovation Corp.
- Current Assignee Address: JP Tokyo
- Agency: Sughrue Mion, PLLC
- Priority: JPJP2017-168577 20170901
- Main IPC: C08L79/08
- IPC: C08L79/08 ; C08G73/10 ; G01N30/88 ; G01N30/00 ; C08K5/17 ; C08K5/3435 ; C08K5/357

Abstract:
A polyimide precursor solution contains a polyimide precursor, wherein in the case where the polyimide precursor is analyzed by gel permeation chromatography, the elution curve of the polyimide precursor has a region A including a higher-molecular-weight peak and a region B including a lower-molecular-weight peak; a weight average molecular weight determined from the region A in terms of polystyrene is approximately 10,000 or more, and a weight average molecular weight determined from the region B in terms of polystyrene is approximately less than 10,000; and when the area of the region A is a and the area of the region B is b, the polyimide precursor satisfies Equation (1) a/(a+b)=approximately from 0.70 to 0.98. Equation 1:
Public/Granted literature
- US20190071569A1 POLYIMIDE PRECURSOR SOLUTION AND POLYIMIDE SHAPED ARTICLE Public/Granted day:2019-03-07
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